Entropy evolution in heavy ion collision
Journal Article
·
· Phys. Rev. C; (United States)
The entropy evolution in heavy ion collisions is investigated by means of a cascade model study. The method for calculating the entropy is based on a smoothing over the momentum space by introducing a local temperature field. It is shown that the resulting specific entropy is rather sensitive to the proper choice of the phase space subdivision at the disassembly stage of the collision. Compared to recent results for specific entropy values inferred from the composite particle yield of 4..pi.. measurements, it is found that the cascade calculations do not favor other model treatments, but as a trend we obtain smaller entropy values than following from conventional considerations within equilibrium statistics.
- Research Organization:
- Joint Institute for Nuclear Research, Dubna, Union of Soviet Socialist Republics
- OSTI ID:
- 6444018
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 32:5; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
653002 -- Nuclear Theory-- Nuclear Matter
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
ENTROPY
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MATTER
MULTIPLICITY
NUCLEAR CASCADES
NUCLEAR MATTER
NUCLEAR REACTIONS
PARTICLE MODELS
PHASE SPACE
PHYSICAL PROPERTIES
SPACE
STATISTICAL MODELS
TEMPERATURE DISTRIBUTION
THERMODYNAMIC MODEL
THERMODYNAMIC PROPERTIES
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
ENTROPY
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MATTER
MULTIPLICITY
NUCLEAR CASCADES
NUCLEAR MATTER
NUCLEAR REACTIONS
PARTICLE MODELS
PHASE SPACE
PHYSICAL PROPERTIES
SPACE
STATISTICAL MODELS
TEMPERATURE DISTRIBUTION
THERMODYNAMIC MODEL
THERMODYNAMIC PROPERTIES